Non-browsing browser

My Netscape 4.76 has stopped browsing. I can send and receive mail, but when I enter a URL or even click a bookmark, all I get is "Document: Done" and nothing happens. If I click an item on the personal toolbar and hover the mouse there, I get the hourglass, but I'm going nowhere. I tried reinstalling. No effect. I can browse fine using IE.

I'm hoping that this is one of those simple, stupid goofs. I know it couldn't be related to my after-midnight disk housekeeping the night before.... Any thoughts?? <img src=/S/confused.gif border=0 alt=confused width=15 height=20>